You're set. Now, anytime you're done running a spell check of a Word document, a box will pop up that will show your the readability stats, including:

Percent of "passive sentences" (you want the number to zero or at least very low)

Flesch Reading Ease, which is the readability on a scale of 0 to 100 (you want the number to be high)

Flesch-Kincaid Grade Level shows you the grade-level of reading for your document (Hemingway is usually grade-school level, newspaper articles should be junior-high level, WRI reports should probably be about high-school level or arguably lower)